The Mac OS vulnerability relates to user login passwords that are stored in the system memory even if the computer is locked or put into a sleep mode. Passware's software captures live Mac computer memory over FireWire and analyzes it, extracting these passwords, a process that the company says takes just a few minutes--regardless of password strength and use of a FileVault encryption. The vulnerability is present in all modern versions of Mac OS, including Mac OS X 10.6 Snow Leopard and the latest Mac OS X 10.7 Lion, released last week.